Max f ricke



(No Model.)

M. PRIGKE. SMOKE CONSUMING FURNACE.

Patented Mar. 28,1893.

jaw/ nion w dMe VI'IIIIIIIIA II UNITED STATES PATENT OFFICE.

MAX FRICKE, OF NEW YORK, N. Y.

SMO KE-CONSUMING FURNACE.

SPECIFICATION forming part Of Letters Patent No. 494,272, dated March 28, 1893.

Application filed November 23, 1892. Serial N0. 458,316. (1% model.) i

To all whom it may concern.-

Be it known that I, MAX FRIOKE, a subject of theDuke of Brunswick, Germany, at pres ent residing in the city of New York, in the State of New York, have invented a new and useful Improvement in Smoke-Consuming Furnaces, of which the following is a specification, reference being bad to the accompanying my invention.

ing drawings. I

This invention consistsin the novel combination in a furnace, as hereinafter described and claimed, of a plate and partitions in the space behind the fire bridge for the purpose of heating air by the gaseous products of combustion during the exit of the latter from-the furnace and of introducing the so heated air in properly regulated quantity, to mix immediately behind the fire chamber with the gaseous and fuliginous products of the imperfect combustion in the said chamber and thereby to completethe combustion of such products.

It also consists in the means hereinafter described for the purpose of absorbing heat from the outgoing gaseous products of combustion and transmitting it to the incoming air.

Figure 1 represents a central longitudinal vertical section of a boiler furnace embody- Fig. 2 represents a horizontalsection of the same immediately below the boiler. Fig. 3 represents a transverse vertical section taken in the line 00 a; of Fig. 1 and viewed from the left. Fig. 4 represents a transverse vertical section taken in the line 'g y of Figs. 1 and 2 and viewed from the left.

A designates the walls of the furnace, B the boiler and O the grate.

D is a fire bridge in rear of the grate. This may be such a fire bridge as is common in boiler furnaces built of masonry or may be an iron plate. In the example represented it is a plate.

E is a plate erected on the base of the furnace behind the bridge D. This plate extends transversely between the side walls of the furnace. Its base is some distance in rear ofthe bridge D butits upper edge is very near the bridge and abouton a level with that of the top of the bridge. In the space between the back of this plate E and the rear wall of the furnace there are arranged two longitudinal partitions which are represented (see Fig. 4) as consisting simply of two loose iron plates rear end with thQ'OlltlGt passage L leading to 1 the chimney. The two side flues or passages J J communicate in front through openings 0. a (see Fig.3) in the lower corners of the plate E with the space K between the said plate E and the bridge; and at the rear of said flues or passages there are openings 19 b in the rear wall of the furnace for the admission of air into said flues, the said openings 1) 1) being fitted with doors, gates or valves 0 c for the purpose of regulating such admission.

h h are iron eye-bolts or studs secured in the partition plates H H and'projecting from the upper side thereof within the central flue or passage I. To these bolts or studs are socured cords 'i i of asbestus fiber which extend lengthwise of the said flue or passage I at a distance from the plates H H, and on these cords, knots or knobs jj of asbestus fiber are affixed at intervals in any suitable manner as by tying them on. I These asbestus cords and knots and eye-bolts are surrounded by the outgoing gaseous products of combustion in the passage I and absorb from said products heat which they transmit to the partition plates H which are further heated by the direct contact of said products for the purpose of heating incoming air in the flues or passages J J.

In the operation of the furnace the gaseous products of combustion from the furnace passing through the flue or passage I around the asbestus cords i 2' and knots j j, and the studs h h and over the plates H heat the said plates, and the air admitted to the flues or passages J by the openings b b is heated through the said plates and is, by the draft of the furnace, drawn through said flues or passages and through the openings a a in the plate E into the space K between the said plate and the fire bridge D, through which space it passes upward and in which it is further heated. Thus heated the said air issues from the opening d between the upper edges of the fire bridge and plate E where it meets the hot 5 gaseous and fuliginous products of the imperfect combustion in the fire chamber and passing wit-h said products into the flue or passage I is therein mixed and combined with the said products to complete their combusro tion.

To provide for the removal from the bottoms of the space K and the flue or passage 1: of

- any dust or cinders that may collect. therein, I provide an opening fin the fire bridge D bet5 low the grate and an opening 9 in the lower part of the plate E, the said openings being fitted withdoors by whichthey are closed during the operation of the furnace.

What I-claim as my invention, and desireto secure by Letters Patent, i'S,

l. The' combination in a-furnace,of a fire bridge in rear of the fire chamben-a plateau ranged across the furnace ihrear-of the-fire bridge, two longitudinal partitions dividing the-space in rear of said: plate-intoa m ddle fiue or passage-and twoside fiuesor-passages', the said middle flue or passagebeingin communication-above the said plate'and thefire bridge with-the fire chamber-and also in com- 0 munication with the outlet passage to the chimney and the twoside fines or passages communicating through openings in-the-said platewith the space between the said plate base of the furnace and leaning against the sidewalls thereof and forming with the walls and base of the furnace air-passages in communication with the space between the fire bridge and said'itransversely arranged plate,

all substantially asahereinset forth- 3; Thecombination wi-th-thefire-bnidge,.the

spacei'nrearot: said plate E into-a-central passage-I for the gaseous productsofi combustion and side passages J J for incoming air, of thecords of asbestus-efiber, attached tothe-said. partition platesH' H within said passage 1, substantially as and for the purpose herein set forth.

MAX FRIOKE.

Witnesses:

FREDK. HAYNES, L. M. EGBERT.

transverse plate E in rear thereof, and the longitudinal diagonal" partition plates-H H in rear-of said transverse plate E dividing the 

